Long distance conduit for conveying fluid at high pressure



March 22, 1932;

F. MUNZlNGER LON G DISTANCE CONDUIT FOR CONVEYING FLUID AT HIGH PRESSURE Filed July 31, 1931 hivehtor a Friedrich Milmzinger, b9

His Attorneg Patentedmar.22,1932}- m wfi m s mew; GEBMANY; s

V instance in plants "designedytef-fed eleetric. power to a thickly OPii l'fitedgdi itI- ie t having 7 high peak l'0; 1d's ',jas in jjlzi rge" cities; it is ad visible t'd locate thfe boiler plant in anyoutefrr dietfiet iiiiditd 's ilpply live steafii'thmughlong 0 mined o t e specification :an'

i vdia ;mm11-111mmany by my Qgexamp1q airt1y $51 191kildme i we}; manner that the, pressures "in the 'see- -siderab1yreduced. e r I I 11 lthe; *p-pesentinstance -la e e the succeeding sec-1510111 as regards; .the du ec- 1 a mQdijfica oiled and T 1 I a turbo-generatorwhich a'reeennected with 1 eachfother by a long distance pipe'P. CThis :pipeis" subdivided into consecutivee sections ,1, 2; 410 1? diffefelltffeistiviw to innel fpres sure; For instanc'efsectibp Ima'ybedesig ned as threat-1e" mlyee arrangedibetive mhe g 'c Controlling means ofmwell'iknowrikirid whi cfhf on-1 1% zitins. iin ectipne, iinisectien s :2 10

LO-game,respee ve Atnorma1bretsmal1 "loads" the reducin g":fvalvejsfakev fdpelfaljedaby largest; qu ant ity efsteam vflows .threughfthe V I pipe,"theivalve eontyolling 'meene 8+1 0 lmey" y be operated ini'response tbvthe rate of flow o'f fidid through the pipe 01'" cdridui't so thflt s they closethe valves in-respons e;t o the-[dcrase ".dei'nend fo l steam, 01' like fluid, Owing to the pygvisien of {the reducing valves it, is

e h 'eh vi tl r reducin valves 5, 6 wel -7. 'bemgyggulalged;

10f pressureexlstmg imthe ;1 n1et fe are forced in an opening direction by the arrangement of a spring 17 between the diaphragm and the lower casing half. The'upper half of the casings is connected by means of conduits 8, 9 and 10 to the inlet of thesucceeding conduit sections as regards the direction of the flow of fluid. 7 i y r The operation of this arrangement is as follows: Let us assume that the consumer T operates under maximum load. If, now the; demand of flu1d, such as elastic fluid, .decreases, owing for lnstance to a decreased load of the turbo-generator, it will cause a building-up of pressure in. the conduit. This efiects an increase of pressure in the upper casinghalves of the fluidresponsive devices, resulting in a closing movementof the movable valve members whereby the original pressure is maintained substantially. constant. It will be readily seen that anopen ing movement of the valves takes place. ifthe demand 'for elastic fluid increases. f

p In Fig. 2 I have shown a modification according to my inventionfor regulating the pressure reducing means in terms of flow of elastic fluid'through the conduit,ithat is,

response to the demand forelasticfluid... 19

and 20 represent the end portions of two success ve conduit sections. 1 21 1s a valvecas-' ing for-connecting the sections in series. The valve member 22 1s regulated by a pressure responsive device 23 including a diaphragm 241:0 which 'niember 22 is fastened. f For moving valve member 22 in responseh'tofthe flow of fluidI may provide one conduitwith a restriction, in the p'resent instance, ind1cated at 25, Withrespe'ctto conduit 'section20 and connectthe upper andlower half of cas ing23 by means of pipes 26jand2'T respectively with the two sides ofthe restriction. Flow responsive devices of this kind are well known in the art. In the present instance the arrangement operates to cause opening of the Valve if the demand for fluid and accordingly the flow of fluid through the conduit increases and closing of the valve if the flow decreases. 5 V

Instead of subdividing the pipe into four sections as described above, it'may be subdivided into a greater or lesser number of sections, as the case may be. r p

' I wish it'to be understood that. I do not desire to be limited to thefaxac-t details of construction shown and described, for obvious modifications will occur to a} person skilled in the art.

. In the claims aflixed to this specificationno selection of any particular modification ofthe invention is intended to the exclusion of other modifications thereof and the right to subsequentlymake claim to any modification not covered by these claims is expressly reserved.

IclaimF- 1. A long distance conduit for conveying fluid athigh pressure comprising sections of,

different strength and pressure reducing valves arranged between said sections.

2. A long distance conduit for conveying fluid at high pressure comprising sections of difierent strength, pressure, reducing valves arranged between said sections and means for controlling said valves. 7 r

3. A long distance conduit for conveying fluid at high pressure comprising sections of different strength, pressure reducing valves rarrangledbetween said sections, and means .icallyjoperative,means for controlling said valves{ 1n such manner'that the pressures in said sections at partial loads cannot exceed the values occurring at fullload.

6. In combination with a -fluid consumer, a conduit of relatively considerable length for conveying fluid to the consumer, said conduit beingdivided into a plurality of sections of decreasingjstrength as regards the direction of'flow, valvemeans provided be tween consecutive sections, and Ine'ans for regulatlngthe valve means, interins or fluid conditions.

7. In combination with a fluid consumer, a conduit ofrelatively considerablelength for conveying fluid to the consumer, said conduit beingdivided into a plurality of sections of decreasing; strength as regards the direction of flow, valve-means provided be tween consecutive sections, and pressure responsive devices" for regulating the valve means :in order to maintain substantially constant the fluid pressure at the inlet of each section.

,8. Along distance conduit for conveying fluid at high pressure comprising a first sec tion through .Whichthe fluid enters and a second section of less'strength than the first section to which the fluid is conveyed from the first section, and means-for regulating the flow of fluid fromthe first section to the sec- .ond section for preventing the pressure in the second section from increasing. at partial load beyond the pressure existing in the sec ondsection atfull load j V 'In testimony whereof I aflix my signature.

' FRIEDRICH MUNZINGER. 

